JP2006096350A - Tool for preventing pulsation of container, and container having the same - Google Patents

Abstract

<P>PROBLEM TO BE SOLVED: To provide a tool for preventing pulsation of a container capable of smoothly pouring a liquid from a container without generating the pulsation by continuously and finely feeding air into the container even when the liquid is poured at any angle of the container. <P>SOLUTION: The tool comprises a fitting part 11 to be attachably/detachably fitted to a mouth part 2 of a PET bottle 1, a cylindrical partition wall 13 formed inside the fitting part 11, a bottom part 14 to connect the fitting part 11 to an end on an inner side of the PET bottle 1 of the partition wall 13, and an air hole 15 consisting of a plurality of small holes at an equal spacing in the bottom part 14. The inner side of the partition wall 13 is formed on a liquid discharging cylindrical part 20, and a space between the partition wall 13 and the fitting part 11 is formed as an air introduction space part 21. <P>COPYRIGHT: (C)2006,JPO&NCIPI

Description

  The present invention relates to a pulsation prevention device for a container and a container with a pulsation prevention device that are attached to or integrated with a mouth portion of a container and prevent pulsation that occurs when liquid is poured.

For example, when a liquid is poured from a plastic bottle, various structures have been proposed as a pulsation prevention device for a container and a container with a pulsation prevention device that prevent the liquid flowing from the mouth of the plastic bottle from pulsating. Are roughly divided into the following two.
First, an air passage is formed from the mouth portion toward the inside of the container, or an air passage pipe is attached.
Second, a liquid discharge port which is a large hole and an air hole which is a small hole are provided.
JP 2000-313486 A JP 2001-48212 A JP 2002-302122 A Japanese Patent Laid-Open No. 2004-18008

In the type provided with the first air passage or the air passage pipe, if the air passage or the air passage pipe is fine, a plug may be formed by the liquid due to the surface tension of the liquid, and air may not be successfully introduced. When the air passage or the air passage pipe is enlarged, the air is introduced in a lump and causes pulsation.
The second type simply provided with a large hole and a small hole is less reliable in preventing pulsation than the first type.
In the first and second types, it is necessary to provide the air passage, the air passage pipe, and the small holes of the air hole so as to be on the upper side and to pour the liquid upward.

  The problem of the present invention is that air is continuously fed into the container finely, and liquid can be poured smoothly from the container without causing pulsation. An object of the present invention is to provide a pulsation prevention device for a container that can be poured into a container and a container with a pulsation prevention device.

  According to a first aspect of the present invention for solving the above problem, a mounting portion disposed on the inner surface of the mouth portion of the container, a cylindrical partition wall formed inside the mounting portion, and the mounting portion, A plurality of small holes provided at equal intervals on the bottom of the partition wall connected to the inner end of the container and on the bottom or on the bottom of the mounting or on the corner of the mounting and the bottom. It consists of an air hole, The inside of the said partition wall is formed in a liquid discharge cylinder part, Between the said partition wall and the said mounting part is formed in the air introduction space part, It is characterized by the above-mentioned.

  A second aspect of the present invention for solving the above-mentioned problems is that, in the first aspect, the mounting portion is detachably mounted on the inner surface of the mouth portion of the container, or integrated with the inner surface of the mouth portion of the container. It is characterized by being fixed to the container or the mouth of the container itself.

  Claim 3 of the present invention for solving the above problem is a cylindrical partition wall disposed inside the mouth portion of the container, and extends from the lower end of the partition wall toward the inner surface of the lower portion of the mouth portion, The partition wall includes a bottom portion having a thickness pressed against the inner surface and a plurality of small air holes provided at equal intervals on the bottom portion, and the inside of the partition wall is formed in a liquid discharge cylinder portion, and the partition wall And the opening is formed in an air introduction space.

  According to a fourth aspect of the present invention for solving the above-described problem, a cylindrical partition wall disposed inside the mouth portion of the container, and extends from the lower end of the partition wall toward the inner surface of the lower portion of the mouth portion. A bottom portion, an elastic pressure-bonding portion that is formed to be inclined outwardly above the bottom portion and elastically press-contacts the mouth portion, and a plurality of small air holes provided at equal intervals on the bottom portion, The inside of the partition wall is formed in a liquid discharge cylinder portion, and the space between the partition wall and the mouth portion is formed in an air introduction space portion.

  A fifth aspect of the present invention for solving the above-mentioned problems is characterized in that, in the first, third, or fourth aspect, the number of the air holes is 3 to 8.

  When the mouth of the container is tilted downward, one of the plurality of air holes is located above the center of the liquid discharge cylinder, so there is no need to use nerves to attach the pulsation prevention device to the container. Also, it is not necessary to use nerves for the position of holding the container when pouring liquid. The liquid in the container is discharged from the cylindrical liquid discharge cylinder, and the air flows into the small air holes from the wide ring-shaped air introduction space around the liquid discharge cylinder, so that the air is continuously fine in the container. The liquid can be poured smoothly from the container without causing pulsation. The liquid and air are exchanged more stably, and pulsation can be more effectively prevented from this point.

A first embodiment of the container pulsation preventing device of the present invention will be described with reference to FIGS. The pulsation prevention device 10 detachably attached to the mouth portion 2 of the PET bottle 1 is integrally formed of a resin material, and has a structure as shown in FIG. Reference numeral 3 denotes a threaded portion to which a cap (not shown) is screwed.
The pulsation prevention device 10 has a mounting portion 11 that is mounted on the inner surface of the mouth portion 2 by the elasticity of the material, and a collar portion 12 that abuts against the end surface of the mouth portion 2 is formed on the upper surface of the mounting portion 11. . A partition wall 13 having a cylindrical shape is formed inside the mounting portion 11, and an end portion of the mounting portion 11 and the partition wall 13 in the plastic bottle 1 is connected by a bottom portion 14. The bottom portion 14 is formed with air holes 15 formed of four small holes concentrically at equal intervals.

  Therefore, the inside of the partition wall 13 is a liquid discharge cylinder portion 20. A ring-shaped space formed between the partition wall 13 and the mounting portion 11 and the bottom portion 14 is an air introduction space portion 21.

  Next, the operation will be described. As shown in FIG. 1, the mounting portion 11 of the pulsation prevention device 10 is inserted into the mouth portion 2 of the plastic bottle 1. Therefore, when the liquid in the plastic bottle 1 is poured, any one of the four air holes 15 is the center of the liquid discharge cylinder 20 regardless of the angle at which the plastic bottle 1 is held and the mouth 2 is inclined downward. Located above. For this reason, when pouring liquid, the air in the air introduction space portion 21 flows into the PET bottle 1 through the air hole 15, and the inflowed liquid is discharged from the liquid discharge cylinder portion 20, so that the exchange of air and liquid is stable. Controlled. Thereby, the pulsation which generate | occur | produces when pouring a liquid is prevented.

As described above, since any one of the four air holes 15 is located above the center of the liquid discharge cylinder portion 20, it is not necessary to use nerves to attach the pulsation prevention device 10 to the plastic bottle 1. It is not necessary to use nerves for the position of holding the plastic bottle 1 when pouring liquid.
Further, the liquid in the plastic bottle 1 is discharged from the cylindrical liquid discharge cylinder portion 20, and the air flows into the small air hole 15 from the wide ring-shaped air introduction space portion 21 around the liquid discharge cylinder portion 20. Can be continuously and finely fed into the PET bottle 1, and the liquid can be poured smoothly from the PET bottle 1 without causing pulsation. The liquid and air are exchanged more stably, and pulsation can be more effectively prevented from this point.

  3 and 4 show second and third embodiments of the container pulsation prevention device 10 of the present invention, respectively. In FIG. 3, the air hole 15 is formed at the tip of the mounting portion 11, and in FIG. 4, the air hole 15 is formed at the corner of the mounting portion 11 and the bottom portion 14. Even if the air holes 15 are formed at such positions, the same effects as in the above-described embodiment can be obtained. In the embodiment of FIGS. 3 and 4, when tilted from the plastic bottle 1, the air hole 15 above the center of the liquid discharge cylinder portion 20 faces upward as compared with the case of FIG. It is effective. However, in the case of FIGS. 3 and 4, the air hole 15 needs to be provided at a position protruding into the PET bottle 1 from the lower end of the inner surface of the mouth portion 2.

  5 and 6 show a fourth embodiment of the container pulsation prevention device 10 of the present invention. In addition, the same code | symbol is attached | subjected to the same or equivalent part as the said embodiment, and the detailed description is abbreviate | omitted. The present embodiment does not have the mounting portion 11 of the above-described embodiment, and the bottom portion 14 has a thickness that is pressed against the inner surface 4 of the lower portion of the mouth portion 2. Therefore, the inside of the partition wall 13 is a liquid discharge cylinder portion 20. A ring-shaped space formed between the partition wall 13 and the inner surface 4 of the mouth portion 2 and the bottom portion 14 is an air introduction space portion 21. Even if it forms in this way, the same effect as the said embodiment is acquired.

  FIG. 7 shows a fifth embodiment of the container anti-pulsation device 10 of the present invention. In the present embodiment, an elastic pressure-bonding portion 16 that is inclined outwardly above the bottom portion 14 and elastically presses against the inner surface 4 of the mouth portion 2 is formed. Accordingly, in the present embodiment as well, the inner side of the partition wall 13 becomes the liquid discharge cylinder portion 20 as in the fourth embodiment. A ring-shaped space formed between the partition wall 13 and the inner surface 4 of the mouth portion 2 and the bottom portion 14 is an air introduction space portion 21. Even if it forms in this way, the same effect as the said embodiment is acquired. Moreover, in this Embodiment, the effect that it can respond even if the internal diameter 4 of the inner surface 4 of the opening part 2 varies to some extent is acquired. In the present embodiment, the elastic crimping part 16 may be formed in a bellows so as to have elasticity.

  FIG. 8 shows a sixth embodiment of the container anti-pulsation device 10 of the present invention. This embodiment shows a modification of the fourth embodiment in FIG. That is, in the fourth embodiment, the air hole 15 is provided in the approximate center of the bottom portion 14, but in this embodiment, the air hole 15 is provided in the end portion of the bottom portion 14. Even if it forms in this way, the same effect as the said embodiment is acquired.

  In each of the above-described embodiments, the pulsation prevention device 10 is detachably provided on the plastic bottle 1, but the pulsation prevention device 10 may be formed integrally with the plastic bottle 1 as a container with the pulsation prevention device. In this case, the mounting portion 11 becomes the mouth portion 2. Alternatively, the pulsation prevention device 10 may be formed as a separate body and integrally fixed to the plastic bottle 1 to form a container with the pulsation prevention device. Also, the number of air holes 15 is not limited to four, and a plurality of air holes 15 may be used, and a preferable result is particularly obtained when four to six are used.

  The partition wall 13 is formed in a cylindrical shape, but may be a polygonal cylindrical shape. Moreover, in the said 1st thru | or 3rd Embodiment, although the air introduction space part 21 was formed in the ring shape, you may divide into multiple pieces. However, the ring shape is preferable because the air introduction space 21 becomes wider.

  Moreover, in the said embodiment, although the case where it applied to a plastic bottle was demonstrated, for example, the bottle containing liquor other than plastic containers, such as a plastic bottle, the 18 liter can containing soy sauce, an oil can, a plastic tank, aluminum It can also be applied to cans.

It is principal part sectional drawing of the container with which the pulsation prevention tool of the 1st Embodiment of this invention was mounted | worn. The pulsation prevention tool of the 1st Embodiment of this invention is shown, (a) is a longitudinal cross-sectional view, (b) is a top view, (c) is a bottom face head. The pulsation prevention tool of the 2nd Embodiment of this invention is shown, (a) is a longitudinal cross-sectional view, (b) is a top view, (c) is a bottom face head. The pulsation prevention tool of the 3rd Embodiment of this invention is shown, (a) is a longitudinal cross-sectional view, (b) is a top view, (c) is a bottom face head. It is principal part sectional drawing of the container with which the pulsation prevention tool of the 4th Embodiment of this invention was mounted | worn. The pulsation prevention tool of the 4th Embodiment of this invention is shown, (a) is a longitudinal cross-sectional view, (b) is a top view, (c) is a bottom face head. The pulsation prevention tool of the 5th Embodiment of this invention is shown, (a) is a longitudinal cross-sectional view, (b) is a top view, (c) is a bottom face head. The pulsation prevention tool of the 6th Embodiment of this invention is shown, (a) is a longitudinal cross-sectional view, (b) is a top view, (c) is a bottom face head.

Explanation of symbols

DESCRIPTION OF SYMBOLS 1 PET bottle 2 Mouth part 4 Inner surface 10 Pulsation prevention tool 11 Mounting part 13 Partition wall 14 Bottom part 15 Air hole 16 Elastic pressure bonding part 20 Liquid discharge cylinder part 21 Air introduction space part

Claims (5)

  A mounting portion disposed on the inner surface of the mouth portion of the container; a cylindrical partition wall formed inside the mounting portion; and a bottom portion connecting the mounting portion and an end of the partition wall on the container inner side. And a plurality of small air holes provided at equal intervals on the bottom side of the mounting portion or on the corner of the mounting portion and the bottom portion, and the inside of the partition wall is a liquid discharge cylinder A container pulsation prevention device and a container with a pulsation prevention device, characterized in that the air introduction space portion is formed between the partition wall and the mounting portion.   The mounting portion is detachably mounted on the inner surface of the mouth portion of the container, is integrally fixed to the inner surface of the mouth portion of the container, or is the mouth portion of the container itself. Item 2. A pulsation prevention device for a container according to item 1 and a container with a pulsation prevention device.   A cylindrical partition wall disposed inside the mouth portion of the container, a bottom portion extending from the lower end of the partition wall toward the inner surface of the lower portion of the mouth portion, and having a thickness pressed against the inner surface; and the bottom portion A plurality of small air holes provided at equal intervals, the inside of the partition wall is formed in the liquid discharge cylinder portion, and the space between the partition wall and the mouth portion is formed in the air introduction space portion. A pulsation prevention device for containers characterized by that.   A cylindrical partition wall disposed inside the mouth portion of the container, a bottom portion extending from the lower end of the partition wall toward the inner surface of the lower portion of the mouth portion, and inclined outwardly from the bottom portion. The partition includes an elastic pressure-bonding portion that is elastically pressed against the mouth portion and a plurality of small air holes provided at equal intervals on the bottom portion, and the inside of the partition wall is formed in a liquid discharge cylinder portion, and the partition A pulsation preventing device for containers, wherein a space between the wall and the mouth is formed in an air introduction space.   The number of said air holes is 3-8, The pulsation prevention tool for containers and the container with a pulsation prevention tool of Claim 1, 3 or 4 characterized by the above-mentioned.

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